Index: /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceVMInfo-win.cpp
===================================================================
--- /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceVMInfo-win.cpp	(revision 30224)
+++ /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceVMInfo-win.cpp	(revision 30225)
@@ -20,5 +20,9 @@
 *   Header Files                                                               *
 *******************************************************************************/
-#include <windows.h>
+#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502
+# undef  _WIN32_WINNT
+# define _WIN32_WINNT 0x0502 /* CachedRemoteInteractive in recent SDKs. */
+#endif
+#include <Windows.h>
 #include <wtsapi32.h>       /* For WTS* calls. */
 #include <psapi.h>          /* EnumProcesses. */